Can I use zipper on a already hacked dtivo?

Hello.

I have a dtivo (phillips dsr 7000) that I hacked a few years ago.  I started messing with it recently so that I could stream content over the web.  In the process, I messed up TivoWeb on my tivo.  I have tried a lot of stuff to make it work again, but I guess i have forgotten all that I learned when I first hacked the thing.  

I still have MRV, telnet, and ftp working, but I still want tivoweb, hackman, etc. to work.  I also like the newer version of tivoweb that is out.  

Can I zipper an already hacked tivo to get tivoweb back, or do I need to break out the original tivo drive (which i kept safe) and start all over???

Thanks